Ivy Classic 10777 - Self-Feed Bit Extension 5-1/2"

Get the reach you need without losing drive. This 5-1/2" self-feed bit extension uses a rugged 7/16" hex shank to deliver positive, slip-free torque transfer for large-diameter bores in framing, plumbing, and electrical runs. The secure, quick-engage interface keeps your self-feed or auger bit locked in, while the compact length threads through studs and joists for clean, straight holes with fewer setup changes.

Key Features

• 5-1/2" extension adds reach for drilling through studs, plates, and joists.
• 7/16" hex shank provides strong, anti-slip torque transfer with right-angle and standard drills.
• Quick, secure bit engagement designed for self-feed and auger bits.
• Heavy-duty steel body for jobsite durability and long service life.
• Compact length improves balance and control versus oversize extensions.
• Ideal for plumbing rough-in, electrical conduit passages, and general framing bores.
• Compatible with most self-feed bits featuring standard extension interfaces.

Brand / Model: Ivy Classic — #10777

Product Type: Self-feed / auger bit extension

Weight: ~5–7 oz (single extension; approximate)

Dimensions (Overall Length): 5.5 in (140 mm)

Shank Size: 7/16" hex (power-drive)

Material: Hardened steel body

Finish / Coating: Corrosion-resistant protective finish

Bit Interface: Secure engagement for self-feed and auger bits with standard extension connection (set-screw/flat or equivalent, per bit brand)

Drive Style: Positive, anti-slip hex drive for high-torque drilling

Compatibility: Right-angle drills and heavy-duty drill/drivers that accept 7/16" hex shanks

Primary Applications: Extending reach for plumbing rough-ins, electrical runs, and framing bores through studs/plates/joists

Operating Notes: Seat bit fully and tighten retention; keep straight in-line pressure; back chips out periodically to prevent bind

Included: One 5-1/2" self-feed bit extension (bits sold separately)

Q: Will the #10777 extension fit my drill?
A: Yes. It uses a 7/16" hex shank, which fits right-angle drills and heavy-duty drill/drivers that accept 7/16" hex.

Q: Which bits does this extension work with?
A: Self-feed and auger bits that use a standard extension interface (e.g., set-screw/flat or equivalent per brand).

Q: How long is the extension and what’s the benefit?
A: It’s 5-1/2" long—enough extra reach to bore through studs, plates, and joists without sacrificing control.

Q: Any tips to prevent binding or wobble?
A: Seat and tighten the bit fully, keep straight in-line pressure, clear chips periodically, and match drill speed/torque to the material.